Fix typechecking (#113)

* Fix typechecking

* Add back installation

Author: AdrienVannson

.github/workflows/code-quality.yml

@@ -25,11 +25,20 @@ jobs:
         version: "0.7.5"
         python-version: "3.10"
 
-    - name: Install the project
+    - name: Install betterproto2
       working-directory: ./betterproto2
       run: uv sync --locked --all-extras --all-groups
 
+    - name: Install betterproto2_compiler
+      working-directory: ./betterproto2_compiler
+      run: uv sync --locked --all-extras --all-groups
+
     - name: Pyright
       working-directory: ./betterproto2
       shell: bash
       run: uv run poe typecheck
+
+    - name: Pyright
+      working-directory: ./betterproto2_compiler
+      shell: bash
+      run: uv run poe typecheck